G. Sirén

The development of Spruce forest on raw humus sites in northern Finland and its ecology.

G. Sirén, 1955 .

Some Remarks on Fire Ecology in Finnish Forestry

G. Sirén, 2011 .

The development of Finland's forests in 1964-2000.

K. Kuusela, G. Sirén, S. Ervasti, 1965 .

The many aspects of intensive energy forestry.

H. Egnéus, A. Ellegård, G. Sirén, 1984 .